title: Spermine alkaloids from Schweinfurthia papilionacea.
abstract: Two new macrocylic alkaloids, 11-epi-ephedradine A (11-epi-orantine) [1] and schweinine [2], were isolated from the whole plant of Schweinfurthia papilionacea, in addition to (-)-ephedradine A (orantine) [3]. Their structures were determined by spectroscopic means, and the stereochemistry has been assigned on the basis of 2D nmr techniques.
authors.affiliation: H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
authors.forename: V U
authors.initials: VU
authors.lastname: Ahmad
authors.forename: V
authors.initials: V
authors.lastname: Sultana
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009153:Mutagens; D010946:Plants, Medicinal / Q000032:analysis*; D012486:Salmonella typhimurium / Q000187:drug effects
chemical_list: D000470:Alkaloids; D009153:Mutagens; C067642:schweinine; C067643:orantine